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Патент USA US2123486

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July 12, 1938.
2,123,486
T. MUNGEN
SLED KNEE
Filed March 19; 1957
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53
INVENTOR.
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THEODORE MUNOEN
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BY
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ATTORNEY.
Patented July 12, 1938
2,123,486
UNITED STATES PATENT @EIQE
‘2,123,486
SLED KNEE
Theodore Mungen, Philadelphia, ;Pa., assignor to
Edward G. Budd Manufacturing Company,
Philadelphia, Pa., a corporation of Pennsyl
Vania
Application March 19, 193'7, Serial No. 131,762
3 Claims. (Cl. 280-—27)
The present invention relates in general to sled their crests are spaced apart transversely of the
knees and in particular to a sheet metal sled knee sled at the top and spaced apart longitudinally
for use on small sleds and also on bob sleds. The
of the sled near their lower ends, with the result
main object of the invention is the provision of that in end view as in Fig. 3 the reinforcing beads
a sled knee of the above typein which the parts diverge upwardly toward the sled body While in 5
are so proportioned in relation to each other as
side view, as seen in Fig. 2, they diverge slightly
to give maximum strength with minimum weight
and which shall be resistant to stresses in all di
downwardly terminating at their lower ends fore
rections and especially to side thrusts and vertical
and aft of the point of attachment of the forked
end i2 to the runner. The major bead H, as seen
the sled body when in use.
in end View in Fig. 3, extends downwardly and 10
outwardly of the sled in a substantially straight
10 stresses such as are set up between the runner and
'
Various other objects and advantages of the
invention will be apparent from a perusal of the
following speci?cation and the accompanying
line to near the lower end and then curves down~
wardly into the vertical plane of the runner, while
the minor bead “5 forms a substantially straight
strut element extending from a point spaced in- 15
15 drawing forming a part thereof. ‘
In the drawing:
' wardly of the upper end of the major bead to
Fig. l is a perspective view of the improved sled a point spaced slightly longitudinally of the lower ‘
knee.
end of the major bead, both beads extending up
Fig. 2 is a side view of a portion of the sled wardly into the front and rear wall elements IQ.
20
showing the attachment of the knee thereto.
of the top portion. It will be seen that this con~ 20
Fig. 3 is an end view of the sled knee attached struction affords a maximum resistance to buck
to a sled.
ling under the severe side strains imposed upon
Fig. 4 is a section on the line 4—4 of Fig. 3. the lower ends of the leg members by the runners
Referring to the drawing in detail, it will be seen
25 that the sled knee is of general inverted V-shaped in turning curves and in skidding against ?xed
objects, and the compressional stresses trans- 25
form having downwardly outwardly diverging leg mitted to the knees as when the sled is thrown
members Ill joined at their upper ends through on the ground in a running coast. It will also
the top member II in the form of an inverted be noted that by forming the major rib with a
rectangular pan having its side walls of substan
continuous curve into a vertical plane near the
30 tially uniform depth all around and extended sub
bottom as is clearly shown in Fig. 3, instead of by 30
stantially normal to the bottom wall, while the a broken‘line or lines, the lower portion of the
lower ends of the leg members ID terminate in major bead forms with the line of extension of
forked ends I2 through which they are attached the minor bead an arc and chord relation with
to the runner l3. The head or top portion H
35 of the sled knee is secured to the sled body by the convex portion of the arc presented outwardly
of the sled near the point of attachment of the 35
attachment to the cross beamsror saddles such sled knee with the runner, thus giving great re
as M of wood, steel or other suitable material, sistance at this point to deformation by side
to which the deck l5 formed of slats or a single swipes or side collisions.
panel of wood, steel or .other suitable material
While I have thus shown and described a spe—
40 is secured and to which saddles are also secured
ci?c embodiment of the invention for the sake ‘10
the usual side rails I6.
of disclosure, it is to be understood that the in
As is’ clearly indicated in Fig. 3 and in the sec
vention is not limited to such speci?c form as
tional view, Fig. 4, each leg member is provided shown but contemplates all such modi?cations
with a pair of strengthening ribs or beads Ill and
45 I8 extending substantially the entire length of the and variants thereof as fall fairly within the ,
scope of the appended claims.
45
leg member. As will be clear’from Figs. 1 and 3,
What I claim is:
these two reinforcing beads lie within the side
1. A sheet metal sled knee having a pair of leg
margins of the leg member, both sloping down
wardly and outwardly of the sled body at a slight
50 angle to the sled body and converging downwardly
toward each other, giving the effect of a triangu
lar brace with its base connected to the sled body
and its apex connected to the runner. It will also
be noted from Figs. 2 and 3 that;v reinforcing
55 beads ll and I8 are canted in such manner that
portions diverging downwardly fore and aft from
the deck of the sled to the runner, each leg por
tion increasing from bottom to top in its effective 50
thickness transversely of the sled and increas
ing from top to bottom in its effective thickness
longitudinally of the sled.
2. A sheet metal sled knee of general inverted
V-shape having a ?at top in the form of an in- 55
2,123,486
verted rectangular pan with side and end walls
of substantially uniform depth all around and
extended substantially at right angles to the bot
tom wall, said side walls having downward ex
tensions forming downwardly diverging leg mem
bers, each leg member having a pair of inwardly
facing channel-section reinforcing beads formed
therein and extending along substantially the
length of the leg and along the full depth of the
10 side wall to the juncture of the side wall of the
top element with the top wall of the top element.
3. A sheet metal sled knee of general inverted
V-shape having a ?at top in the form of an in
verted rectangular pan with side and end walls
15 of substantially uniform depth all around and ex
tended substantially at right angles to the top wall
of the inverted pan-shape top, said walls having
downward extensions forming downwardly di
verging leg members, each leg member having
an inwardly facing channel section reinforcing
bead formed therein and extending along sub
stantially the length of the leg and along the full
depth of the side wall to the juncture of the side
wall of the top element with the top wall of the 10
top element, said bead in the region of the pan
shape top maintaining substantially its full depth
to and ending abruptly at the top level of the top
element.
THEODORE MUNGEN.
15
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